Dust-guard for journal-boxes.



No, 824,127. l PATBNTED JUNE 26, 1906. G. L. MANSFIELD.

DUST GUARD I OR JOURNAL BOXES.

APPLICATION FILED JULY 6, 1905.

2 SHEETS-SHEET 1 NoI 824,127. PATENTED JUNE 2 6, 1906.l

` G. L. MANVSFIBLD.

DUST GUARD FOR JOURNAL BOXES.

APPLICATION FILED JULY 6. 1905.

- 2 SHEETS-SHEET 2.

55 my invention on the liney y ofFig.v 2. Fig. 2

' To all whom it may con/cern):

UNITED 'STATES GEORGE L. MANSFIELD,

PATENT OEEICE.

OE CHICAGO, ILLINOIS.

DUST-GUARD FOR .JOURNAL-BOXES.,-

Specification of Letters Patent.

Patented June 26, 1906.

Application mea July 6,1905. serial No. 268,328.

lowing is a full, clear, and exact description,f `such as will enable others skilled in the art to which it app'ertains to make and use the same.

My invention relates to dust-guards for em- I ployment in journal-boxes, the office thereof being to exclude dust from the journal-boxes.

My invention further and particularly relates to improvements in dust-guards of the class known as adjustable dust-guards,

, from the fact that such guards are adapted to take up their own wear.

The objectof my invention is to provide a dust-guard that shall be composed of a plurality of sections held in suitable form and together providing an opening to receive the car-axle journal.

The particular object ofthe invention is to providey a dust-guard of general rectangular form, but composed of distensibly and collapsibly connected sections that shall be normally collapsed by spring-pressure applied to two of the sections and affecting all thereof.

Further and special objects of my invention will appear hereinafter.

My invention consists generally in a dustguard comprisin a pluralityof sections composing a body o 4rectangular form provided with a normally non-circular opening, two of' said sections being yguided upon each-other and inclosing or incasing the other sections, the latter being adapted when distended to distend the incasing sections, there being also a spring or springs arranged to resist the distension ofthe parts or sections'and said sections being of such form that when they are distended the journal-opening in the guard is made substantially circular preparatory to placing the guard upon the vjournal; and, further, my invention consists in various details of constructiony and in combinations of parts, all as hereinafter described, and parv ticularly pointed out in the claims.

My invention will be more readily understood by reference to the accompanying drawings, forming a part of this specification, and

j in which- Figure 1 is a vertical longitudinal section of a journal-box and ay dust-guard embodying is a vertical section of the dust-guard substantially on the line x of Fig. 1, the walls of the j ournal-box being also shown in section. Fig. 3 is an edge view of the guard With the flexible edging removed. Fig. 4 is asimilar view of the top ofthe dust-guard. Fig. 5 is a side view of the dust-guard in collapsed condition, the side plates of the outer sections being broken away to disclose the inner sections; and Fig. 6 illustrates a modification of my invention. Y

y As shown in the drawings, 2 represents a journal-box of ordinary construction, and 3 Is the axle-journal, having the usual shoulder 4. The journal-box is provided with a dustguard pocket' 5, containing the dust-guard and having its top closed by a removable wooden strip 6. The dustfguard is a thin rectangular body composed of a number of sections having a central opening to'fit the shoulder-ofthe journal. The sections combined to form the guard are so constructed and related that, as hereinafter explained, they exert substantially uniform pressure at all points around the guard. They are composed of Wearable material, such as wood,

and as they are worn by the rotation of the journal they automatically close upon the same to keep a tight joint between the guard and the journal. The principal members of the guard are the sectionsAA and B B. The sections A A are slightly different in form and willv be described separately, While the sections B B are identical in form, and the vspecific description of one will serve for both.

The sections A1Al are alike in this: Each is made up of a middle bar. or plate 8 and two side plates 9 9, the latter being of somewhat greater length than the former and'secured thereto by a number of nails or rivets .10. The extensions of the plates 9 9 form grooves occupy the grooves 11 of the section A and i serve as guides for said section. Stop-shoulders 13 on the yfree ends of bars 13 cooperate with the shoulders 12 of the section A and limit the separation of the sections A A as shown in Figs. 2 and 5. Obviously slots andv11 11 in the ends of the sections A A', and i IOO t is in these particulars-to wit, I

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stop-pins may take the shoulders 12 and 13.

For yieldingly connecting the sections A A, I employ two small spir'ailf'springs A15 each l formed of a piece of wire and having right*- angled lends 15, that are driven into the midi These springs tend to draw the sections together, -as

dle plates 8 8 of the sections A A.

would-notad-mit ajournal, Iit obviously being v necessary to htly separate them before the opening wilI have been s uiiciently en- Alar-,f fecll rte .receive the journal. What has been said ofthe openings in `'the sections A A is 'likewise true 'of the sections f The assembled parts when collapsed 'for-in an irregul'a'r Inon-'circular opening which ow'ever is 'made to conform to a true circle 'when 't e parts lare jdistended, as shown in Fi 2, at

time the lfour arcs will rbe maille 'concentric. The section B isthinn'er Athan sections A, A and oi less widthland length, and thesections B are substantially vincased oriinclosed 4in 'the cuter sections A A. -Each section B -is provided with two slots 16, arranged at an angle-oi.l forty-'five degrees with re'sp'ect to the 'meeting edges oi the inclosi'ng sections The connection between the sections Ajand B B lis made by one or `more nails 1f? 'driyen througheaeh slot 16, said nailsjor pi-ns 1-7 being held in the side 'plates of the sections A A.

The {ar-rangement is lsuch that the 'edges tor l ends 1B". of the Asections B B will substantially meet when the sections A YA are closed toy rgether, yas -in Fig. y5, Aand it is obvious that if "tions suc outward pressure is exerted 'upon the inner peripheries ofthesections B the latter, ac't- Aing upon the xnails-or pins 17 in 'the sections -A A', will-drive `the sections A A apart,fthe 'separation ci the latter being-equal 'to 'the separation 'oi the sections BB by reason 'of the an `ular arrangement of the slots '1'6 in .parts (See lFig. '2.) -It will be 'understood 'that when the zincasing sections 'are thus distended lthe separationof the incased secy"springs15, 'and when the parts Yare :released f'said springs will cause the pins 17 inthefs'ec'- 'tions A1A to x.press 'u on the sections B B Land operating in the s ots therein cause 'the 1returnofthesections-to thecollaps'ed' o'sition l-or r`until same make contact with 't e journal-, if the latter 'is in position. ing the sections A A and B B at 'right angles place of the stop` movement will be opposed by :ghe

By arrang- I secure the required distensibility of the gualrd, and by lestablishing the relations of the parts upon forty-iive-degree angles I distribute the lforce of the springs uniformly upon all sections and cause them to bear upon the {iournal with equal pressure. From this tact it follows that the wear of the parts will be substantially equal, and danger of eventually elongating the opening in the guard, with consequent 4admission of dust to the journal-box, -is obviated.

The slots '16 may be made directly in the sections B B, -as shown in 'the lower hall of liig. 5, or may 'be mad-e 'by applying metal strips 16/ Atothe sections B, as lshown in the upper half of Fig.I 4v5. Fu'rtherm ore, the slots may be 'made in 'the Lpla'tes'?) ofthe sections A A', the pins in 'this case being driven through the sections B. Because of the ease 'with lthis feat'ure oi my invention may be modi-fried do 'not confine myinvent'ionfto the structure illustrated.

My dust-.guard vmaybe divided, so to speak, upon any 'diameterof the rectangle, an example being shown in Fig. 6, 'wherein the 'i11- ca's'mg "members have `a general triangular form. Though slightly different 'in design, the 'structure is'the same as before described, lthe only exception being theomission of t'hc guide parts, 'made `possible b'y the greater width of the 'incased 'n'iem'bers B BL. In this fi ure vparts corresponding to thoseoi 'the other figures are indicated by same characters, but with suffix" a.j i

No 'particular` 'care 'is observed in iin'ishing cast-ironljourna'l-boxes, and 'the dust-guard pockets 'thereof 'vary vin width. On the other hand, the dust-guards are ofun'i'lorm width and 'thickness and `lit loosely in the pockets. wTo prevent the entrance o'f dust fin such cases, I'p'ro'vide my guard wi-than edging 1'8. This edging is a strip of flexible fabric somewhat wider than the edges ofthe Adus't-gmi'rd, so 'that it projects over the sideof tl`l1e`guard,`as shown 'in Figs. 1, 3, `and 4. rIhe strip Iis tackedalll around tlheguard, except at points 'near the meeting edges of the sections A A', 'where fullness 119 is allowed 'ino'rder t'hat said sections may -be 'distended, as described. Whenthe guard lis placed in the 'pocket l5 of a -journal-box, the `fie'mble edges 'of the lcloth strip 18 engage the 'walls of the pocket, and 'thus'close-allopenings between the same and the guard.

Idavi'ng -thus described my invention, I

claim as 'new and desire 'to secure by Letters Patentl. A dust-guard comprising, in combina tion, a plurality of 'box-like incasing'm embers, together containing a normally 'nonscircular opening, a "lurality of incased "members, movable within the incasing members and together containing anorma'lly non-circular opening, means Apressing said members to- Ward a vcommon center and ymeans whereby IOO ITO

theoutward movement ofthe incased meml members, other members contained therein, 65 I bers is communicated to the incasing members, and vice versa, substantially as described. f

2. A dust-guard comprising, in combination, a plurality of sections together containing a journal-opening and composing a distensible body, and a flexible strip of greater length than the combined edges of said body,

when the latter is collapsed, said strip being attached to certain of said edges and being of Vgreater width, substantially as described.

3. In a dust-guard, a pair of incasing sections, together containing a journal-opening, in combination with a pair of incased sections containing a corresponding opening and arranged at right angles to lthe incasing sections, and means within the incasing sections for imparting the outward movement of the incasing section to the contained sections to y distend the same, substantially as described.

4. In a dust-guard, suitably-guided separable incasing sections and suitable incased sections together containing a journal-opening, in combination with an edging-strip of flexible material inclosing or encircling said incasing sections, having fullness to permit movement thereof and also limiting such movement, substantially as described,

' 5. In a dust-guard, incasing sections, containing a ournal-opening and each comprising side plates and a mid-bar, in combination with guide bars or parts attached to said side plates whereby said sections are movably alined, incased sections arranged between the sides of the incasing sections, at right angles to said incasing sections, and containing a journal-opening, springsconnecting the incasing sections and concealed beneath said guide-bars, and enga ing and connecting means koperating angu arly with relation to the axes of-movement of said members for communicating the movement of the incasing sections to the incased sections and means for simultaneously ressing all of the sections upon a journal, supbstantially as described.

6. In a dust-guard, box-like incasing sections formed of side plates and mid-bars and guide-bars connecting the same, the latter serving to slidably connect said incasing sections, springs arranged within the incasing sections, incased sections arranged at right angles to the incasing sections, said sections to ether containin a journal-opening. and being normally cola sed by said springs, means limiting the istension of the sections, and means arran ed within the incasing sections and wheregby the movement of `either pair of sections in either direction is communicated to the other pair, substantially as described.

7. A dust-guard for journal-boxes, comprising, in combination, box-like incasing said members together containing a normally non-circular journal-opening, springs pressing said members toward a common center, and means operatively interposed between said incasing and incased members,

and adapted to cause the correspondingmovement of all of said members when the members of either set are moved toward or away from said center, substantially as described.

8. A dust-guard comprising, in combination, four members, together containing a normallyl non-circular opening, and means operatively interposed between lsaid members, causing the same to coact upon angles of forty-five degrees to their axes of movement, substantially as described.

9. A dust-guard comprising, in combination, four members, together containing a normally non-circular opening, means operatively interposed between said members causing the same to coact upon angles of forty-five degrees to their axes of movement, and springs connecting two of said members and pressing all thereof toward a common center, substantially as described.l

10. Ay dust-guard comprising, in combination, two box-like incasing members, together forming a rectangular plate and containing a normally non-circular opening, two

other members incased therein and containr ing a like opening, one of the pairs of members having slots occupying angles of substantially forty-five degrees to the edges of` said incasing members, and the other air of members having pins occupying sai slots, as and for the purpose specified.

11. A dust-guard comprising a plurality of sections together containing a normally non-circular opening, in combination with means yoperatively interposed between said members and whereby the same are adapted to open simultaneously and to close simultaneously to enlarge and contract said opening, respectively, substantially as described.

12. A dust-guard comprising, in combination, two abutting sections, lanother pair of abutting sections arranged at right angles thereto, said sections together containing a normally non-circular opening, means pressing said sections toward a common center, and means operatively interposed between the pairs of sections and whereby said pairs are caused to coact upon angles of substantially forty-five degrees to the lines of abutment, substantially as described.

In testimony whereof` I have hereunto set my hand, this 1st day of July, 1905, inthe presence of two subscribing witnesses.

GEORGE L. MANSFIELD. Witnesses:

CHARLEs GILBERT HAwLEY, HOWARD S. AUSTIN.

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